1. The sum of the first five terms of an AP and the sum of the first seven terms of thesame AP is 167. If the sum of the first ten terms of this AP is 235, find the sum ofits first twenty terms.| Jaspal Singh repays his total loan of Rswith the first instalment of Rs 1000. If hemonth, what amount will be paid by hirloan does he still have to pay after the 3

The sum of the first five terms of an A.P. and the sum of the first seven terms of the same A.P. is 167. If the sum of first 10 terms of this A.P. is 235, find the sum of its first twenty terms.

The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum first ten terms of this AP is 235, find the sum of its first twenty terms.

The sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. If the sum first ten terms of this AP is 235, find the sum of its first twenty terms.

The sum of the first five terms of an AP is 55 and sum of the first ten terms of this AP is 235, find the sum of its first 20 terms.

The sum of the first p terms of an A.P. is q and the sum of the first q terms of the same A.P. is p. Find the sum of the first (p+q) terms of the A.P.

If the sum of the first four terms of an AP is 40 and the sum of the first fourteen terms of an AP is 280. Find the sum of first n terms of the A.P.

The first term of an A.P. is 20 and the sum of its first seven terms is 2100, find the 31st term of this A.P.

If the sum of first 7 terms of an A.P is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P

If the sum of first p terms of an A.P is equal to the sum of the first q terms , then find the first (p+q) terms .